Improvement in machines for forming barrel-heads



P. H. LAWLER 85 J. B. DOUGHERTY. MAKING BARREL HEADS.

No. 33,153. Patented Aug. 27, 1861.

RH. LAWLER, or sPENcERPoRT,AND JonN B. nou-GHERTY, orfnoonns'rnn,

.- NEWYORKVM i iMeRovi-:MENTiN MACHINES FOR FoRMnNe BARREL-HEADS.

y specification foi-ming part of Letters Patent No. 33,153, dated August 27, 1861..

To @ZZ whom it may concerm' Be it` known that we, P. H. LAWLER, of Spencerport, New York, and JOHN B. DOUGH- ERTY, of the city of Rochester, county of Monroe, and State of New York, have made and invented certain new and useful Improvements in Machines for Cutting Barrel- Heads; and we do hereby declare the following to be a full and accurate description of the same, reference being had to the accompanying drawings, making part of this speciication, and to the letters of reference marked thereon, same letters referring to like parts in all the figures.

0f said'drawings, Figure'l is a plan of our improved machine. Fig. 2isa side elevation of the same. Fig. 3 is an end elevation.

The nature of this invention will be best understood from a description of the construction and mode of operation of the machine, and in order more fully to describe it we will detail the process of cutting out a barrel-head from the material as usually prepared-that is to say, planed and jointed.

I The three pieces which usually go to form a barrel-head are placed between the face-plates or clamps A and B, being supported while being thus arranged by means -of the arms or rests d ct. Then by pressing on the lever or treadle t with the. foot the shaft carrying the face-plate fA is made to slide forward by means of the bell-crank leverslc le and hold the materials lirmly between the two faceplates or clamps, which are still left at liberty to revolve. As soon as the material is firmly clamped, the saw O is moved against the heading stud, so as to cut through it. This is easily effected, as the frame which carries the saw rotates on the central stud and is easily moved by the handle H in the path of the red-lined arc, Fig. 1. 'lhe same -movement of the handle H which moves forward the saw withdraws the armsa afi-om beneath the head, thus leaving-the latter free to revolve wit-hout obstruction. The arms are withdrawn through the intervention of the compound levers b b, (seen in Figs. l and 2,) which cause the vertical shafts fr r, which carry the arms o. @,'to rotate. But one of theI Shafts fr is `seen in Fig. 2, the corresponding one being on the other side of the frame and connected with it by means of thelever e. (Shown inl-ed ink in Fig. l.) The moment the handle H is moved beyond the end of the lever Z, Figs. l and 2,` the end Z of said lever rises and actsas a `pawl to prevent any retrograde motion on the part of the handle H until released by means to be hereinafter described. The arms ddbeing retractedrno impediment is now odered to the rotation of the barrel-head, which is therefore set in motion by throwing the screw S into gear with the worm-wheel W by means of the handle h, which partially rotates the cam M and thus raises the shaft upon which the endless screw is placed. This arrangement will be easily understood from .an inspection of Figs. 2 and 3.

' Attached to the handle h is the spring-catch.

d, which slipping over the pin d,attached to the frame of the machine, holds the handle and consequently the cam M and with it the screwin place until it is ready to be released; At the same time that the movement of the handle h raises the screw into gear it allows the pawlcto fall onto the ratchet-wheel'b, attached to the shaft which forms the hinge of the treadle. This shaft and with it the treadle and its connections are therefore'held steady so long as the handle h is retained in place, and the operatorie therefore relieved from the necessity of keeping his foot on the treadle to retain the clamps or face-plates A and B tight against the heading stud. The machine will now go on itself without any supervision, the head being rotated against the saw and thus cut to a proper size and bevel. As soon as the face-plateB has made one complete revolutiomthe pin q will strike the end of the lever Z and, depressing the other end Z', will allow the handle H to move forward into the position shown in Fig. 1 in obedience to the spring U, attached to the saw-frame. At the same time the pin p upon the worm-wheel lifts up and releases the spring-catch d, allowing the cam to rotate and the screw to fall out of gear, and lifting the pawl out of the ratchet-wheel b and thus releasing the faceplate A from the forward pressureand allowing it to liy back in obedience'to thevspiral spring coiled round the shaft. The whole machine is therefore brought to a state of rest, (with the exception of the saw and the shaft and pulley 'nl n, which carry the endless'screw,) ready to receive another head, the one that has just been eut .having fallen out infront of the mach-ine as soon as the face-plates have b een separated.

Having thus'described our invention, what we claim therein as new, and desire to secure by Letters Patent, is-

1. The arrangement of the vertical rods or shafts lr T, carrying the arms or rests a. a and connected with the lever Il,which moves the saw, the whole operating in the manner and for the purpose substantially as described.

2. The combination of the ratchet-wheel and pawl I) and o with the treadle t and cam M, so that Whenever' the screw S is thrown into gear with the Wheel W the pressure of the face-plate A against the barrel-head may be maintained while said face-plate is revolving and this without the continued supervision of the operator.

3. The arrangement of the pin p, catch d, and handle h with the cam M, whereby the screw S is thrown out of gear with the wheel Was soon as the latter has completed one revolution.

4. The com binatlon of the pin pand levereatch Z with the handle H of the saw, whereby the saw is maintained in proper position by means of the spring V ,while the. barrel-head is being cut and is removed by means of the same spring as soon as the face-plate B has completed one revolution P. H.LAWLER. JOHN B. DOUGHERTY.

Witnesses:

JOHN PLIM, J oHN RANKIN. 

